It's a TOUGH part of the job, because you don't want to give up on a crying child but at the same time it's so grating and impacts the day so much!
I had a 4 yrs old that I termed after 2 months of crying all day...and it was extra annoying because she was 4..not a baby. It was awkward because it was my neighbour's little girl but oh well, the other kids hated it when she came!